Excellent. Seems like I'm on the right path then. Do they sell rocker shims or just use hardened washers?Yes, the rockers will need to be shimmed to get the correct rocker geometry.
Get the cam and add .050" to the valve lift for clearance is a good plan.
You will also need the cam specs to get the correct valve springs.
Do the valve stems measure .343"?
Yup. Then that will allow me to size the valves appropriately.
Yup, they're the 11/32 ones.